\input{snips-math.tex}


\newcommand{\sinc}{\operatorname{sinc}}
\newcommand{\Sa}  {\operatorname{Sa}}
\newcommand{\rmj} {\ifmmode\mathrm j\else\relax\fi}
\newcommand{\scrF} {\ifmmode\mathscr F\else\relax\fi}
\renewcommand{\Re}{\operatorname{Re}}

\newcommand{\myvarx}{0}
\newcommand{\myvary}{0}
\newcommand{\myvarz}{0}

% 在表格各行间进行公式对齐
\newcolumntype{R}{>{$}r<{$}}
\newcolumntype{L}{>{$}l<{$}}
\newcolumntype{M}{R@{${}\xrightarrow{\;\;\mathscr F\;\;}{}$}L}
\newcolumntype{A}{R@{${}\xrightarrow{\;\;\mathscr L\;\;}{}$}L}
\newcolumntype{Z}{R@{${}\xrightarrow{\;\;\mathscr Z\;\;}{}$}L}
